This article demonstrates that the marriage rules and alliance structure under the Tang dynasty (notably the "Five Names and Seven Clans" system) are not cultural arbitraries, but obey the universal topological constraint of the 64→20 invariant. By modeling the space of relational possibilities via Clifford algebra Cl(6,0) and its 64 configurations (isomorphic to the 64 hexagrams of the Yijing), we show that nilpotence and the geometry of the Merkabah filter these 64 states to retain only 20 stable equivalence classes (the alliance attractors). This topological filtration, which prohibits "frustrated" configurations (incest taboos), ensures the negentropic homeostasis of the Chinese social system, in radical contrast to the Western schism analyzed by Viguier.
DE DOMINICIS Bruno (Sun,) studied this question.
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